HDFS-10239. Fsshell mv fails if port usage doesn't match in src and destination paths. Contributed by Kuhu Shukla.

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSShell.java

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/MoveCommands.java

@@ -100,7 +100,11 @@ class MoveCommands {
 
     @Override
     protected void processPath(PathData src, PathData target) throws IOException {
-      if (!src.fs.getUri().equals(target.fs.getUri())) {
+      String srcUri = src.fs.getUri().getScheme() + "://" +
+          src.fs.getUri().getHost();
+      String dstUri = target.fs.getUri().getScheme() + "://" +
+          target.fs.getUri().getHost();
+      if (!srcUri.equals(dstUri)) {
         throw new PathIOException(src.toString(),
             "Does not match target filesystem");
       }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSShell.java

@@ -522,6 +522,37 @@ public class TestDFSShell {
     }
   }
 
+  @Test
+  public void testMoveWithTargetPortEmpty() throws Exception {
+    Configuration conf = new HdfsConfiguration();
+    MiniDFSCluster cluster = null;
+    try {
+      cluster = new MiniDFSCluster.Builder(conf)
+          .format(true)
+          .numDataNodes(2)
+          .nameNodePort(8020)
+          .waitSafeMode(true)
+          .build();
+      FileSystem srcFs = cluster.getFileSystem();
+      FsShell shell = new FsShell();
+      shell.setConf(conf);
+      String[] argv = new String[2];
+      argv[0] = "-mkdir";
+      argv[1] = "/testfile";
+      ToolRunner.run(shell, argv);
+      argv = new String[3];
+      argv[0] = "-mv";
+      argv[1] = srcFs.getUri() + "/testfile";
+      argv[2] = "hdfs://localhost/testfile2";
+      int ret = ToolRunner.run(shell, argv);
+      assertEquals("mv should have succeeded", 0, ret);
+    } finally {
+      if (cluster != null) {
+        cluster.shutdown();
+      }
+    }
+  }
+
   @Test (timeout = 30000)
   public void testURIPaths() throws Exception {
     Configuration srcConf = new HdfsConfiguration();